Coil-insulating machine.



B. HAEPELY. i COIL INSULATING MACHINE. APPLIOATIUN FILED APR. 2 0, 1911.

1,090,394. Pategted Mar. 17, 19141 ratus.

titl

EMIL Eenrum?, or BASEL', swrrznnnaun, asseiiort To wnsrinonocsn vnmicrarc .ann MANUFACTURING coureur, n oonronarron or rEnNsYLvANIA.

ooit-rusornfrmoiunior-nun.

Specification of Letters Patent. patienter@ lta g, 1'?, WQML,

.application tiled April 20, 1911. Serial No. $22,35.

To all whom 'it concern Be it known that I, EMIL HAEFELY, a citizen of the Swiss Republic, residing at 29' Bundesstrasse, Basel, in Switzerland, have invented certain new and useful lmpro've- 1 ments in Coil-insulating Machines, of which t the following is a speciiication.

My invention relates to apparatus for applying wrappings or coverings of fabric to rods or bars, and it has special reference to apparatus which is adapted to apply insulating fabric to the coils ot dynamo-electric f machines and otherI types of electric appa- Tlie object of niyinvention is to provide a relatively simple machine by which particularly desirable insulating wrappings or coverings may readily be applied to coils of the class above indicated after they are bent into inal form.

Another object of my invention is to so y construct and equip the machine just reterred to as to minimize the employment of manual labor and, at the same time, to iniprove the quality of the insulation.

In my co-pending application, Serial No. 507,003, filed July l0, 1909, apparatus is shown and described which has the same general purpose as that herein set forth hut which requires the expenditure of a considi erable'amount of manual labor and the constant attention of an operator.

According to my present invention, I provide an automatic machine which may opcrate without any attention for a considerable period of time and produce uniform y results, the insulating fabric being closely wrap d about the portion of the coil on whic the machine is'operating. The ini sulating material, when complete, constitutes a solid mass which is practically iml pervious to moisture and is capable ot with- 5 standing relatively high voltages.

ln the accompanying drawing, Figure l l is a side elevation of the apparatus; Fig. 2 lis a front elevation of a holder for the work; l Fig. 3 is a front elevation of the apparatus without the holder shown in Fig. 2; Fig. 4 l is a section on the line Ve-X oit' Fig. 1, and Fig. 5 4is a section on the broken line i A-B-C of Fig. 3'. Figs. 6 and 7 are fragmentary 'detail views of certain of the parts shown in the preceding figures.

For supporting a mandrel to he wound l or one already wound with insulating matcl rial, holders nare secured to the frame a and are provided with bifurcated heads c mounted a casing consisting of two halves g g that are bolted together and are provided at the top with an opening z.. The inner -wall of each half of the casing is provided with a circul arly curved recess, and between t-he edges z' of the walls of the said recesses, is rotatably mounted a spur wheel rim Z provided with an opening y'. While in Fig. l the recess y' of the toothed rim d coincides with the recess zoiI the casing, it

. is shifted relatively to the latter to the eX- tent ot' about 450 in Fig. o. ln the toothed rim al are mounted two spindles e, e, one of which is provided with two arms f. and the other with two oppositelv disposed arms f". .An ironing` har m is pivoted to the ends of the two arms f by means oi a pin l and a similar bar m is pivoted to the ends ot arms f. The two ironing bars are hollow, in orderthat hot hars may be inserted into them. The ironing` hars m', m are forced toward each other by springs 7c that are located between and parallel tothe spinrlles c', o, Each spring 7c is held in Working' position by two collar-plates 'u that are mounted loosely upon the spindles e and c. As shown in Figs. 6 and 7, the two eyes I of each collar-plate n are provided with re- I cesses with wluch engage coupling clutches having a parabolic or other convenient shape of working face and provided on the two fron't sides of the hubs of' the arms f. f opposite one another. The said hubs are lreyed onthe spindles e', e, thus transporting a relative movement of the two arms f', f, one in respect to the other, on the spindles and pushing away the collar-plates u from each other, so that the springs lc are strained more or less according.; as the said relative movement of the arms f', f is greater or less and as is, consequently, the measure of rotative movement of the spindles e, c.

With. the toothed rim l engage two to thed pinions n of equal size that are secured to spindles o each of which is vided with a worm wheel p. With the worin wheels 7 enga-ge worms l] of equal pitch that are secured to a spindle r. A` The all@ Atitl ROB pro-

spindles 0 and r are rotatably mounted in bearings s and if, respectively.

lVhen the dei'ice ir, to be Wound or one already wound with insulating material, has been secured in the heads c of the holders Z) and fixed between the two ironing bars m m Which can be pushed avvay from each other by means oi leys, er other convenient meelianical devices, the .spindle r is continuously rotated, preferably by means ot a mechanieal driving' picar. The rotation is transmitted through the Worms f7, Worm wheels y), spindles 0 and the tootlieifi pinions n, to the toothed rim f/ which carries the spindles e e. the arms 7" and f and the ironing;r bars nt' and m". 'lhe insulating!` material, which may consistof paper coated with a glue such as shellac. either :lone or combined with llalics olf mica, is pressed hard ae'ainst the mandrel by the ironing'.

bars m,v and tmf@ and the coating is melted by the heat ot tht` ironing' bars, preferably obtained by introducing hot rods into them.A so thath after the cooling and solidit'yinej of' the coating', the layers o'l insulatiimr material adhere to each other and constitute a compact insulating' sheath.

The object ot the openings /L of the cas ing g, 7 and j ot' the toothed rim (Z is to permit oit thil insertion et one side ot a coil comprising' one. or a plurality ot complete turns of a suitable conductor in order that the straight portionsI may be wound vwith insulating' material ,or in order that insulat-y ing' material already Wound on said portions may be made more compact. The compacting is ciieeted by the ironingY bars which are revolved in contact with the Work.

llavinpj now described my invention, l declare what l claim is:

1. A device 'for applying' a covering' or wrapping to stationary bodies comprising a hollow rotatable body having' a pair of pressure members` mounted therein and means` tendine` to yieldine'ly torce said members toward each other.

2. A device tor applying' insulation to an electric conductor con'iprising a pair of cooperating pressure members adapted to engage opposite surfaces ot' the conductor. means tor continuously exertingA a torce tendine to move the pressure members to- 'ard each other. a hollouY cylindri 'al member within which said pressure members are mounted. and means "tor rotatinle' said cylindrical member to etliect revolution of the pressure memliers around the conductor.

3. A device tor ain'ilyinel insulation to electric mmluctorsI compris-ine' a rotatively supported holloiv cylindrical member. a pair ot cooperating' pressure members disposed .vithin the cylindrical member and ii. A machine for applying insulation to electric conductors comprising' a rotatable hollovv member having a pair of internal pivoied arms, pressure members secured to the extremities oi? the arms and located nea-r the axis o't" the rotatable member and means tor yiehline'ly Vforcing` the pressure members toward each other.

5'. fi machine ior applying insulation to electric conductors comprising a rotatable member haring a pair of pivoted arms, pressure members secured to the ends o the arms and located near the center of rotation ot the rotatable member, means for yieldingly i'oreing` the pressure members toward aeh other, a pair ot cam members acting on the arms and connected by an adjustable spring.

ti. A machine for applying insulation to electric conductors comprising a, rotatable member having` a pair of pivoted arms, piressure members secured to the endsof the arms and located near the center of rotation oit the rotatable member, means for yieldingly forcing the pressure members toivard each other, and a pair of yieldingly connected cam members acting` on the arms.

'i'. A machine for applying insulation to electric conductors comprising 'a rotatable member haringl a pair of longitudinally disposed parallel shatts, av pair of arms corres spondingly mounted on the shafts, coperating pressure members secured to 'the arms naar the axis of rotation of the rotatable member and means for yieldingly forcing' the pressure members toward'each other,

8. A machine -for applying insulation to electric conductors comprising a rotatable member having a pair et' longitudinally disposed parallel shafts, a pair of arms correspondingly mounted on the shafts, coperatine' pressure members secured to the 'arms near the axis oi' rotation of the rotatable membe and comprising a pair of yieldingly connected 'fam blocks mounted on the shafts 'and located at the respective sides of the ing a longitudinal side opening, bearing.

members located at the respective ends of the cylindrical member and having' alined sideopenings corresponding to the side opening in said cylindrical member, coperating pressure members carried Within the cylindrical member and yieldingly'forced toward each other, and means for continuously ro-` tating the hollow cylindrical member.

1l. A machine for applying insulation to electric conductors comprising a rotatively supportedhollow cylindrical member having a longitudinal side opening, bearing members located at the respective ends of the cylindrical member and having alincd side opening corresponding to the longitudinal side openino of the cylindrical 1nembei', a pair of longitudinal shafts rotatively supported within the hollow cylindrical member relatively close together and near .the inner cylindrical surface diametri cally yopposite the longitudinal side opening, arms secured to the shafts opposite each otherj longitudinal pressure arms which terminate near the axis or' the cylindrical member, means for yieldingly forcing the pressure members toward each other, and a drivin means operatively con* nected to the oylin rical member.

12. A device for applying a covering or members pivotally secued to the inner ends of the wrapping' to stationary rods or bars comprising a rotatable hollow cylindrical body having external gear teeth and a longitw dinal side opening, pressure members'sup ported near the axis of the cylindrical body, means tending to yieldingly force the pres` sure members toward each other, and spaced pinions meshing with said gear teeth for continuously rotating the cylindrical body.

l. i device for applying insulation to electric conductors comprising a hollow segmental cylindrical body having external gear teeth, segmental ring bearing members in which the segmental cylindrical body is rotatively supported, cooperating pressure members mounted Within the body, a pair ot' spaced pinionsa one of which is always in mesh with said gear teeth, and means for synchronously opel ating the pinions.

In testimony Whereot- I have signed my name to this specification in the presence ot trito subscribing Witnesses.

. EMIL HAEFELY. 

